FIGURE 1. Location of studied well (modified after Odemerho; Urhobo Historical Society, 2008).

FIGURE 2. Lithostratigraphic section of Well 5 OML 34.

FIGURE 3. Ranges of Planktonic foraminifera showing Biozones for the studied Well 5.

FIGURE 4. Sequence stratigraphy chart showing paleobathymetry of deposition of studied well.

FIGURE 5. Triangular plot of shell-type ratio, showing portion of intersection as normal marine shelf sea environment (modified after Murray, 1973).

FIGURE 6. Photomicrographic plate of some foraminfera specie from the studied well. 1, Bolivina dilatata, (Reuss) X 100; 2-3, Ammonia beccarii (Linne), (2)Dorsal view X 200, (3) Ventral view X 200; 4, Uvigerina sp. (Cushman) X 150; 5, Hopkinsina bononiensis, (Fornasini) X 150; 6-8, Epistominella vitrea (Parker), (6) Dorsal viewX 200, (7) Edge view X 200, (8) Ventral view X 200; 9, Orbulina universa, (d’Orbigny) X 250; 10, Brizalina interjuncta, (Graham, De Klasz and Rerat) X 150; 11, Heterolepa floridana, (Cushman) X 200; 12, Orbulina suturalis, (Bronnimann) X 250; 13, Praeorbulina glomerosa, (Blow) X 200; 14, Praeorbulina sicana, (Cushman and Stainforth) X 200; 15, Uvigerina isidroensis, (Cushman and Renz) X 150; 16-17, Cibicorbis inflata, (d’Orbigny), (16) Dorsal view X 200, (17) Ventral view X 200; 18, Hanzawaia strattonii, (Applin) X 200; 19-20, Valvulineria gasperensis, (Bermudez) (19) Dorsal view X 200, (20) Ventral view X 200; 21, Lenticulina grandis, (Cushman) X 200; 22, Textularia laminata, (Cushman) X 100; 23, Brizalina mandoroviensis, (Graham) X 100; 24-25, Globorotalia mayeri, (Cushman and Ellisor) (24) Dorsal view X 200, (25) Ventral view X 200.